Gass fired heater



FIG. 1 is a front perspective view of a gas fired heater, showing our new design;

FIG. 2 is a front perspective view thereof on a reduced scale;

FIG. 3 is a right side perspective view thereof;

FIG. 4 is a left side perspective view thereof; and

FIG. 5 is an enlarged top plan view thereof.

The broken-line showing of portions of the rear of the housing are for illustrative purposes only and forms no part of the claim design. 

The ornamental design for a gas fired heater, as shown and described. 